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AUSCERT External Security Bulletin Redistribution
ESB-2023.0916
USN-5871-1: Git vulnerabilities
16 February 2023
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AusCERT Security Bulletin Summary
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Product: Git
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-23946 CVE-2023-22490
Original Bulletin:
https://ubuntu.com/security/notices/USN-5871-1
Comment: CVSS (Max): 5.0 CVE-2023-23946 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N)
CVSS Source: SUSE
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
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USN-5871-1: Git vulnerabilities
14 February 2023
Several security issues were fixed in Git.
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Releases
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 ESM
Packages
o git - fast, scalable, distributed revision control system
Details
It was discovered that Git incorrectly handled certain repositories.
An attacker could use this issue to make Git uses its local
clone optimization even when using a non-local transport.
( CVE-2023-22490 )
Joern Schneeweisz discovered that Git incorrectly handled certain commands.
An attacker could possibly use this issue to overwrite a patch outside
the working tree. ( CVE-2023-23946 )
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and
Universe repositories, and it is free for up to five machines.
Learn more about Ubuntu Pro
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.10
o git - 1:2.37.2-1ubuntu1.4
Ubuntu 22.04
o git - 1:2.34.1-1ubuntu1.8
Ubuntu 20.04
o git - 1:2.25.1-1ubuntu3.10
Ubuntu 18.04
o git - 1:2.17.1-1ubuntu0.16
Ubuntu 16.04
o git - 1:2.7.4-0ubuntu1.10+esm5
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
o CVE-2023-23946
o CVE-2023-22490
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